01:24PM | 10/25/00
Member Since: 10/24/00
2 lifetime posts
Is it possible to increase the capacity of an air coniditioner at a modest cost?? The house is 1.5 stories (1500 sq ft downstairs and 1000 upstairs) and I have two systems rated at I believe 3 tons each. When talking to a service man he mentioned that most houses are designed in my area (Austin, TX) at 95 F. If you watched the news, we hit 60-70 days above 100 and peaked at 112 last summer. Neither system can keep up and are continuously running. The coolant is at spec and they operate fine.

The service tech did say the upstairs unit is running a high pressure and the evaporator will need to be replaced in the next year or two ($800 - $1000 cost).

Any comments, thoughts, suggestions appreciated.


05:57PM | 10/25/00
Member Since: 02/19/00
206 lifetime posts
The only problem is that the highest rating is 90 or 95*, but this is the max. perameters of a given A/C unit. I know it is hot, but the hi temp days are not how the a/c is sized. If you had too much A/c at normal temps, you would drop the temp but not humidity. Don't expect to get 75* when it's 100+_ outside. It's unrealistic.


06:16AM | 10/26/00
Member Since: 10/24/00
2 lifetime posts
Sorry, but I did not give enough info.

I am not looking for 75 or lower. I am looking just to hit 78. On days above 100, the temperature in the house can climb to 84 F (with the A/Cs never shutting off). This is too warm and uncomfortable. The house is less than 7 years old and I do not think the design is correct.


01:19AM | 10/27/00
Member Since: 02/19/00
206 lifetime posts
O.K.,...looking into your problen further I found that probable tonnage needed is 3 ton for down and 2 ton for up. you have 3 and 3 I believe. Operation is critical on any A/C unit especially when it's hot. Unfortunatly, some service teh's. do not know what the hell they are looking at. If the head pressure was hi on one unit, there is a problem and it should be fixed. I would try to get a least one more opinion as to the proper operation of your equipment.
Note,.. the tonnage I gave you is based on an educated guess not an actual geat gain of the house....


03:59AM | 10/27/00
Member Since: 03/13/00
1675 lifetime posts
There are some other things you can do to help your AC units. Have you checked the insulation in your attic? Have you considered a power attic ventilator? (These can be very valuable.) Are your windows double glazed, low E glass? Awnings? etc., etc., etc.
Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon